>> well, first of all, they have found a way to sir couple navigate law enforcement we talk to local seeing more. middle man better business. also, at the same time, better crackdowns along the border means the cartels really want to put some of their business here on this side of the border, less of a chance that on 00 other side. we talk to local law enforcement in the southwest, especially here in southern california which has the most gang members in the country. they will tell you they are concerned they are working together but it's a difficult process. take a listen. >> i think most law enforcement agencies already put this gang activity a huge priority because of the violence in our communities. violent crimes a huge priority. we got to keep the dopers on their heels. because that's the power, that's the money. it all works together. >> and, trace, these same local law enforcement will tell you they are worried about the change south of the border. the mexican border may not crack down now that they have new leadership. >> trace: sounds like a troubling trend what are they do